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TPS40200-HT Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS40200-HT
Description  WIDE-INPUT-RANGE NONSYNCHRONOUS VOLTAGE-MODE CONTROLLER
Download  45 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS40200-HT Fiches technique(HTML) 7 Page - Texas Instruments

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COMP
FB
SS
ISNS
RC
Soft-Start
and
Overcurrent
E/A and SS
Reference
Enable E/A
700 mV
PWM
Logic
GDRV voltage
swing limited
to (V
– 8 V)
IN
VDD
GDRV
GND
+
+
Driver
OSC
UVLO
5
3
4
2
7
1
8
6
TPS40200-HT
www.ti.com
SGLS400B – OCTOBER 2009 – REVISED MAY 2010
DEVICE INFORMATION
Functional Block Diagram
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Switching frequency-setting RC network. Connect capacitor from RC pin to GND pin and resistor from VIN
RC
1
I
pin to RC pin. The device may be synchronized to an external clock by connecting an open-drain output to
this pin and pulling it to GND. The pulse width for synchronization should not be excessive.
Soft-start programming pin. Connect capacitor from SS to GND to program soft-start time. Pulling this pin
SS
2
I
below 150 mV causes the output switching to stop, placing the device in a shutdown state. The pin also
functions as a restart timer for overcurrent events.
COMP
3
O
Compensation. Error amplifier output. Connect control-loop compensation network from COMP to FB.
FB
4
I
Feedback. Error amplifier inverting input. Connect feedback resistor network center tap to this pin.
GND
5
Device ground
GDRV
6
O
Driver output for external P-channel MOSFET
ISNS
7
I
Output voltage.
VDD
8
I
System input voltage. Connect local bypass capacitor from VDD to GND.
Copyright © 2009–2010, Texas Instruments Incorporated
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